oneshot.earth helps carbon markets operate faster, coordinate more easily and run more transparently. We focus on super-pollutants such as methane, where cutting emissions today has an outsized effect on near-term warming.
We run the Open Carbon Protocol (OCP), a new, data-first, transparent carbon credit registry. The OCP tracks projects and credits from issuance to retirement and connects to the wider market infrastructure, including marketplaces and meta-registries such as the Climate Action Data Trust. We work closely with standards bodies, project developers, VVBs, and intermediaries/buyers. Here are some good introductory articles to the carbon markets: “Voluntary Carbon Markets: Everything You Need to Know in 2026, Sylvera”, “What is the voluntary carbon market?, VCM Primer”
The role We are hiring our first full-time, in-house Full-Stack Software Engineer to build the OCP registry and our internal tools, and to grow into owning them end-to-end. You will work with our Technical Product Manager and our part-time back-end engineer. Our fractional CTO will be on hand for the big architecture decisions. Over time, you will become the go-to technical voice in a team of carbon-market specialists.
Employment:
permanent, full-time (40 hours) employee of oneshot.earth B.V.
Location:
Netherlands, remote-first, with 1-2 office days a month at our co-working space at Norrsken Amsterdam
Reports to:
Technical Product Manager / Chief Product Officer
Start:
Immediate, up to January 2027
What you'll do
Build and maintain the OCP registry and related tools across the stack: React/Next.js front end, Node.js/TypeScript APIs, PostgreSQL data model and AWS infrastructure.
Turn product requirements into technical specs with our Product Manager, then build, test and ship them.
Design and document secure, well-structured RESTful APIs, for our own front end and for external partners and integrations.
Build integrations with market infrastructure, such as meta-registries (e.g. the Climate Action Data Trust), payment providers (e.g. Stripe) and partner systems.
Help keep the platform reliable and secure: CI/CD (GitHub Actions), monitoring, backups, access control and performance
Make sure registry data is accurate and auditable, because credits, issuances and retirements must be traceable.
Review code and work closely with our part-time back-end engineer, and take on more architecture and ownership as you grow into the lead engineer role.
Explain technical trade-offs and estimates to the team in plain language, with our fractional CTO as a sounding board.
What you'll bring
3-5 years building and running production web applications, with hands-on experience on both front end and back end
Strong TypeScript and JavaScript; Node.js (Express or similar) on the server and React (ideally Next.js) on the client
Solid relational database skills: PostgreSQL schema design and SQL
Hands-on experience with AWS (e.g. EC2, RDS, S3, Lambda, Route 53, SES) and CI/CD pipelines
A good grasp of API design, plus habits around testing, code review and documentation
Comfortable working independently in a small team: you can scope work, make sensible calls and flag risks early, and you want to take on more architecture and technical leadership over time
Clear written and spoken English
Based in the Netherlands
Nice to have
Experience (or interest) in climate tech, carbon markets, registries, fintech or other systems where data integrity and audit trails matter
Blockchain or distributed-ledger experience, or work with tokenised assets
Some UI/UX sense: turning designs (e.g. Figma) into responsive, accessible interfaces
Experience at an early-stage startup or in a small engineering team
Dutch language skills
What we offer
Salary of €65,000 - €75,000 gross per year, depending on experience, plus 8% holiday allowance
Equity in oneshot.earth
A clear path to a lead engineer role, with mentoring from our fractional CTO and a salary review after 12 months
Permanent contract with oneshot.earth BV
25 holiday days (full-time)
Remote-first working with flexible hours; 1-2 office days a month, travel reimbursed
Laptop and home-office budget
Work that directly helps fix climate change, in a small team where you have real ownership and big growth opportunities
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